Abstract: An accessory mounting system for mounting an accessory such as an overhead console to a vehicle opening such as a sunroof opening includes a pair of spaced, opposed mounting sockets being adjustable with respect to one another to span and engage opposite lower edges of the vehicle opening. In a preferred embodiment of the invention, one of the sockets is mounted on a rail which is telescopically adjustable with respect to the other socket and an incrementally adjustable locking mechanism allows the sockets to be finally locked into compression for removably holding the console in place. The sockets, in a preferred embodiment, include concave sockets with relatively thin upper members to engage the sunroof opening without interfering with its normal operation.